Only to add to the chorus of don't get an Ipad if you're after a reader 
The ipad's screen is not any more suited to reading from than any other half decent laptop, and the battery will not last a fraction as long as a proper ereader would, nor be as readable.
The PRS600 might do, as might the KindleDX (although Amazon's antics with it's ebook store have put me right off them as an ebook supplier), if possible it might be worth waiting a few months as there are more models due I think.

The ipad's screen is not any more suited to reading from than any other half decent laptop, and the battery will not last a fraction as long as a proper ereader would, nor be as readable.
The PRS600 might do, as might the KindleDX (although Amazon's antics with it's ebook store have put me right off them as an ebook supplier), if possible it might be worth waiting a few months as there are more models due I think.